Free online developer tools that run in your browser

Format JSON, compare text, convert timestamps, encode Base64, make QR codes, or generate mock JSON/CSV/SQL — privately on your device.

• Test Data Generator
• JSON Formatter
• String to One Line
• Dot Path to YAML
• Text Diff
• Timestamp Converter
• Base64 / String Codec
• QR Code Generator
• AI News Daily Digest
• Developer Blog